Improvement in box-trimming machines



C. BOPP;

BOX-TRIMMING MACHINE.

Patented Nov. l, 1875.

N.FETERS, PHOTO'LITNDGRAPHER. WASHINGTON, D C.

peculiar provisions to allow t onnrsr BOPROE GREEN rornr, BROOKLYN IEIIMSELlIAND JOSEPH H.

, NEW YORK, AssIeNoR, r0

SWIFT, OF SAME PLACE.

IMPROVEMENT IN BOX-TRIMMING MACHINES.

Specification forming part of Letters Patent N o. 1 76,046, October 27, 1875.

To all whom it may concern Be it known that I, UHRrsTTBoPP, of Green point, Brooklyn, Kings county, in the State of New York, have invented certain new and useful Improvements in Box-Trimming Machines, of which the following is a specification The object of the invention is to conveniently and rapidly plane off the overhanging ends of the pieces of board. In the manufacture of rectangularwooden boxes for packing, and the like, it is common to use thinner material for the bottoms and the sides than for the ends, and to nail the bottoms and the sidesupon the ends. The finished boxes show the sides and bottoms terminating exactly flush with the outer faces of the end pieces. In practice it is common to attain this condition by setting them a little overhanging, and then planing oifthe surplus.

My improved machine carries-planes for this purpose in a vertical reciprocating gate or frame-piece, the plane-cutters being peculiarly mounted and adjustable therein. The box, in being planed, is supported upon a table, which extends up so close to the plane of the cuttingedges as to save the wood from splitting ofi as each cutter terminates its work and is leaving the edge of its board.

Boxes in which the depth is exactly equal to the width do not require all my adjustments. Most boxes are wider than their depth, like raisin-boxes, or less wide than their depth, like boot and shoe boxes. All these require he dressing of the entire end at two operations.

To dress the end of a box I lay the box upon a table, with one corner against a gage set on the table, and push the box forward on the table until the end is dressed by the planeirons. One plane-iron runs close to the gage and dresses the board, which is upright at that position. The other plane iron is at a proper distance therefrom to dress the opposite side of the end. Then turning the box quarter over, so that it lies upon another face, and again pressing it over against the gage, and presenting the same end to the cutters, while the plane-iron, nearly opposite the gage, is in position to dress one edge, it will be found dated November 16, 1875 application tiled that, with the raisin-box or the shoe-box, the other plane-iron will come in a wrong position. I provide three plane-irons. One'is always used. The others are set at different distances therefrom, and are used alternately, according to the position in which the box is presented. For convenience I make the machine double. and allow two workmen to operate upon the same table at the same time.

The accompanying drawings form'a part of this specification, and represent what I consider the best means of carrying out the invention.

Figure 1 is a front elevation of my machine. Fig. 2 is a top view of the same, with the sash and its guides in section.

Similar letters of reference indicate like parts in all the figures. v

A is the fixed frame-work. A is a horizontal bench or rigid table, forming a part thereof, and extending quite up to the line of the cutters. A are vertical guides, adapted to firmly support and guide a stout gate or rectangular frame, D, of cast-iron or other suitable material, which carries tools D D D somewhat analogous to ordinary carpenters planes, but mounted in a-nearly vertical position, and set at each end in a deep groove extending along the interior of the frame or sash D. Each plane carries a plane-iron set in a cavity extending through it. Each may be adjusted outward andinward from the central line, and may be set in any required position by means of hand-screws a stout slotted cross-bars E, fixed on the back face of the frame or sash D. GH are crossbars, serving as gages. They are secured in any desired position on the table A by means of hand-screws g h, standing in a slot in the table, as represented. K is a link or pitman, connecting the frame or sash D to the crank L on the shaft L. This crank-shaft L is turned by a steam-engine or other suitable power, either directly or through the intervention of suitable belts or gearing.

A plane-iron is mounted in each of the adjustable planes D D &c., and also in the upright side bars of the framing D. The planeirons in the latter are marked m, and are set in oblique positions to the line of their motion e 8270., extending through by being held in oblique holes or throats, as indicated. The other plane-irons m m are mounted in throats in their respective planes,

which extend directly across such planes, and

are therefore easier of construction and adjustment. The proper inclination of the cutting-edges of these latter is obtained by inclining the whole body of the planes D D 850. The inclination of either or all may be varied, as required in practice to get the best effect. It is important that the wood be planed off by a drawing cut, and that the draft or inclination of the cutting-edge shall be away-from the center of the end of the box being treated. Thus, if the plane-irons, in removing the surplus from overhanging material of the boards around the end, should carry their work a lit- :tle too far, and. commence to plane=the mate-; Jrial of the end itself, they will only remove a littleof the edge, and-will leave the surfacei: treatedjina smooth condition, and leave ztheg *edgeof the planing work beveled at a suffi- .ciently gradualdnclination.

The double "form of the machine Lesteem :preferable; but some of the advantages of;

the invention may be realized by'a single ma;

chine'-that'is to say, by a sash, D, which is;

onlyabout half the width here represented,

1 and with a single one of the gages G or H.

To use my machine the undressed boxes are: taken one by one by the attendant, and placed;

--on-the table A, with one-endpresented to :the

plane-irons; and with one .corner thereof- .against the. gage-bar H. -In this positionathe,

projecting ends of the boards are planed-off .a similar double treatment.

by the irons m m. Then the box .is ,drawn .backa little toward theattendant and turned quarter over, and again thrust forward. Now, the projecting ends of the boards are dressed by the plane-irons m m; and that end of the box being.nowvcompletelydressed the box is turned over, and the other end is subjected to Another attendant may, in the meantime, be operating on boxes of thesame orof ,a.different size and form, pressing'the corners of his boxes against his gage Gr. Experiments indicate that my machine will make one mans labor some two or three-fold as effectiveasheretofore :in this branch of the work. The plane D should be set a very little back of the planes on each side thereof, so that it will notact on the end of the box when the planes on each side are working on their .respectiveedges.

I claim as my invention- 1. The slotted bars and the adjustingscrewsele in combination ,with the sash :D "and adjustable planes, :D "D has and for the purposes specified.

*2. The adjustableplanesED -D ,:in;inclined ,positions in :the .sash:D,- wi-th -ironssm imtat right an gles in tsaidtplanes, as and for the; purposes specified.

In :testimony whereof 'rI :have @118161111130 set my'handin ethe presenceof :two subscribing :witnesses.

*OHRIST BOBP. Witnesses iPHILLIPS ABBOTT, :CHASJO. 'STETSON. 

